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In some systems that employ overlay technology, nodes are highly heterogeneity. Classic routing protocols (such as Chord) consider nodes as homogeneous and all nodes maintain routing table with same size, taking on same routing load. Therefore the scalability of system is restricted by weakest node. Heterogeneity-aware routing mechanism (Hetero-RM) is proposed in this paper. It assigns each node certain...
We study the benefits and trade-off of using scheduled lightpaths for traffic adaption. We propose a network planning model, which allows lightpaths to slide within its desired timing window with no penalty on the optimization objective, and to slide beyond its desired timing window with a decreasing tolerance level. Our model quantitatively measures the timing satisfaction or violation. We apply...
In order to resolve the problems in P2P system, such as security, bad management and single computation of trust value in current trust model, a domain-based multi-factor trust model in P2P system is proposed. This model is based on the hybrid P2P network structure, calculates trust value of nodes by using multi-factor. The data model and the way of trust value calculation are proposed. The simulation...
We present a study on the static resource allocation in lightpath routed WDM networks, where each request is associated with a service grade. The goal is to maintain certain acceptance ratios for the requests of all grades, as well as to minimize the resource consumption. We propose a model of static grade-of-service (GoS) differentiation as minimizing the total rejection and cost penalty. Then, we...
Various static resource allocation algorithms have been used in WDM networks to allocate resources such as wavelength channels, transmitters, receivers, and wavelength converters to a given set of static lightpath demands, based on certain design objectives. However, although optimized resource allocations can be obtained, it remains an open issue how to determine which resources are bottlenecks to...
Four key functional requirements are identified in peer-to-peer optical networking: resource discovery and inter-domain routing protocol, symmetric inter-domain signaling mechanism, autonomous blocking control, and data plane or physical layer internetworking
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